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Author Topic: turbo lagging 1.8t  (Read 1881 times)

Offline rickos

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turbo lagging 1.8t
« on: 06 July 2009, 20:05 »
hi have a bad problem with my mk 4 golf 1.8t. it drives fine up until you get to 3000 4000 revs and the turbo kicks in and you get a bad lag. there is no fault codes when i had it put on the computer and i have changed the pressure boost solenoid valve (n75) and there is no change. is there any one who has experienced this problem or any mk4 turbo experts?
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jamie16v

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Re: turbo lagging 1.8t
« Reply #1 on: 06 July 2009, 20:06 »
thats the 1.8t for you i guess... get a remap :smiley:
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Offline linz

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Re: turbo lagging 1.8t
« Reply #2 on: 06 July 2009, 20:08 »
all turbo cars are gonna have lag...
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Offline topher

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Re: turbo lagging 1.8t
« Reply #3 on: 06 July 2009, 20:08 »
Sounds like a boost leak.. could be a split pipe that's ballooning under full boost. Check all the boost hoses, particularly around the intercooler connections.
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Offline Rhyso

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Re: turbo lagging 1.8t
« Reply #4 on: 06 July 2009, 20:10 »
Quote from: linz on 06 July 2009, 20:08
all turbo cars are gonna have lag...

yebut it should lag and then go  :wink: not spool, power, lag, power

Quote from: topher on 06 July 2009, 20:08
Sounds like a boost leak.. could be a split pipe that's ballooning under full boost. Check all the boost hoses, particularly around the intercooler connections.

check around the pancake pipe in the drivers wheel arch - a few peeps have had a leak there
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Offline topher

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Re: turbo lagging 1.8t
« Reply #5 on: 06 July 2009, 20:12 »
don't listen to linz she blew her car up :tongue: :grin:
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Offline rickos

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Re: turbo lagging 1.8t
« Reply #6 on: 06 July 2009, 20:29 »
o.k thanks ill have a look at my pipes the weekend. also want to make it quicker and i dont want to re-map it yet. car is standard other than a dumpvave.  im thinking exhaust and filter?
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Offline topher

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Re: turbo lagging 1.8t
« Reply #7 on: 06 July 2009, 20:33 »
I reckon 3-4bhp gain with a decent backbox, make that more like 12-15bhp if you do the downpipe and cat aswell. Filter on it's own is 1-2bhp tops... all that stuff only really makes a difference when remapped.
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Offline rickos

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Re: turbo lagging 1.8t
« Reply #8 on: 06 July 2009, 20:44 »
ok. what make's would you recomend? also been looking into getting a front mount intercooler. any suggestions on where and what make recommend getting? thanks..
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Offline topher

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Re: turbo lagging 1.8t
« Reply #9 on: 06 July 2009, 20:53 »
ahh thats all the free info you get for today :tongue:

have a look in the maintenance and info section, and the sticky topics.. then have a play with the search function, im sure you'll find lots of answers!
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